The AllMtn 3.0 helmet delivers the protection, performance, and comfort you need for challenging trail rides. Leatt's 360° Turbine Technology works to minimize rotational forces and absorb energy from lower-speed impacts, while the integrated PowerBridge and impact foam offer protection against high-speed collisions, creating a comprehensive 3-in-1 safety system. The lightweight polymer construction features 20 vents for excellent airflow, paired with a moisture-wicking, breathable liner that effectively manages sweat. A Fidlock magnetic buckle enables quick one-handed fastening, and the adjustable breakaway visor adds versatility for tackling rough terrain on extended rides. Features PowerBridge in-molded force absorber Lightweight polymer shell in three sizes Sunglasses dock port for easy, secure storage Fidlock magnetic closure system 360° Turbine Technology Helps reduce peak brain acceleration at impact speeds associated with concussion Helps reduce peak brain rotational acceleration Adjustable visor with breakaway function for rotational impact force reduction In-molded impact foam for superior energy absorption Maximized ventilation with 20 vents, effective even at low speeds Moisture wicking, breathable, anti-odor and washable inner liner Certified and tested: AS/NZS 2063:2008, EN1078, CPSC 1203 Weight: from 350g (0.78 lbs) Sizing Small: 51–55 cm (20–21 5/8 in) Medium: 55–59 cm (21 5/8–23 ¼ in) Large: 59–63 cm (23 ¼–24 ¾ in)